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Arithmetic Logic Functions | MC14520B
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MC14518B 双路 BCD 计数器和 MC14520B 双路二进制计数器采用一个单片结构，使用 MOS P 沟道和 N 沟道增强型器件进行构造。每个器件都由两个相同、独立、内部同步的 4 级计数器组成。计数器级是 D 型触发器，具有可互换的时钟和启用线路，用于在级联多个级时根据需要在正向或负向转换上递增。每个计数器都可以通过在重置线路上应用高电平来清除。此外，MC14518B 将在两个时钟周期内计算出所有未定义的状态。这些互补 MOS 正数计数器主要用于需要低功耗和/或高抗扰性的多级同步或纹波计数应用。
- Diode Protection on All Inputs
- Supply Voltage Range = 3.0 Vdc to 18 Vdc
- Internally Synchronous for High Internal and External Speeds
- Logic Edge-Clocked Design Incremented on Positive Transition of Clock or Negative Transition on Enable
- Capable of Driving Two Low-power TTL Loads or One Low-power Schottky TTL Load Over the Rated Temperature Range
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